- trigger: CronJob moved to deployNS (sless-fn-{userNS}), was tr.Namespace
Reason: with NetworkPolicy default-deny, pod in user-ns can't reach
Service in sless-fn-ns. Co-locating CronJob with Service guarantees
connectivity regardless of NetworkPolicy configuration.
handleTriggerDeletion updated consistently.
- trigger: pin curlimages/curl to 8.5.0 (was :latest)
Reason: reproducibility, no unexpected behavior changes from image updates.
- function: sort env vars in buildDeployment (was non-deterministic map range)
Reason: non-deterministic order caused k8s to detect container spec 'change'
on every reconcile → unnecessary pod restarts. Sorted order is stable.
- function: cleanup kaniko Job in handleDeletion
Reason: if Function deleted during Building phase, kaniko Job continued
running, wasting CPU/memory and pushing an unused image.
- invoke: filter hop-by-hop headers in proxy response (RFC 2616 §13.5.1)
Reason: Transfer-Encoding especially dangerous — forwarding it corrupts
response body framing for the client.
- config: SLESS_API_TOKEN no longer required
Reason: dead code — field loaded but never passed to any component.
Auth uses validateJWT() middleware, not static token.
Namespace lifecycle: user namespaces preserved on destroy (not changed).
E2E: apply 4 resources + destroy clean. Operator v0.1.22 deployed.
sless
// TODO(user): Add simple overview of use/purpose
Description
// TODO(user): An in-depth paragraph about your project and overview of use
Getting Started
You’ll need a Kubernetes cluster to run against. You can use KIND to get a local cluster for testing, or run against a remote cluster.
Note: Your controller will automatically use the current context in your kubeconfig file (i.e. whatever cluster kubectl cluster-info shows).
Running on the cluster
- Install Instances of Custom Resources:
kubectl apply -f config/samples/
- Build and push your image to the location specified by
IMG:
make docker-build docker-push IMG=<some-registry>/sless:tag
- Deploy the controller to the cluster with the image specified by
IMG:
make deploy IMG=<some-registry>/sless:tag
Uninstall CRDs
To delete the CRDs from the cluster:
make uninstall
Undeploy controller
UnDeploy the controller from the cluster:
make undeploy
Contributing
// TODO(user): Add detailed information on how you would like others to contribute to this project
How it works
This project aims to follow the Kubernetes Operator pattern.
It uses Controllers, which provide a reconcile function responsible for synchronizing resources until the desired state is reached on the cluster.
Test It Out
- Install the CRDs into the cluster:
make install
- Run your controller (this will run in the foreground, so switch to a new terminal if you want to leave it running):
make run
NOTE: You can also run this in one step by running: make install run
Modifying the API definitions
If you are editing the API definitions, generate the manifests such as CRs or CRDs using:
make manifests
NOTE: Run make --help for more information on all potential make targets
More information can be found via the Kubebuilder Documentation
License
Copyright 2026.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.